Angular filtering by Bragg photonic microstructures fabricated by physical vapour deposition
We propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration is more technologically challenging, as the longitudinal periods of such str...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/135317 |
| Acceso en línea: | https://hdl.handle.net/2117/135317 https://dx.doi.org/10.1016/j.apsusc.2019.03.082 |
| Access Level: | acceso abierto |
| Palabra clave: | Photonic crystals Bragg gratings Maxwell equations Spatial filtering Physical vapour deposition Glancing angle deposition FDTD Surface grating Cristalls fotònics Bragg, Xarxes de Equacions de Maxwell Àrees temàtiques de la UPC::Física |
| Sumario: | We propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration is more technologically challenging, as the longitudinal periods of such structures must be shorter than the operational wavelength. The proposed configuration is designed and analyzed by FDTD simulations and the multilayer structure is fabricated by physical vapour deposition on the microstructured substrate. The measurements of the angle/wavelength transmission of the fabricated structure show the signatures of the angular filtering. |
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